Pm the more the vibration i cant even drive fast
Check engine light on? if so, I would check plugs and coils. Next I would go after the harmonic balancer. Along with checking mounts.
Could be a lot of things but maybe an "easy" fix is a bad motor mount(s). This could cause the vibration.
SOURCE: Audi A4 - Strong vibrations while accellerating and while idling
If it had points and carb i could diagnose it but with all this computer control stuff it could be anything from a faulty sensor to a dodgy fuel pump or evan a multiplug loose .i would suggest the dealer to diagnose it sorry i cant be of much help but evan the software is encrypted and the vehicle has to be connected via the internet to stuggart
SOURCE: while in drive and coming
Yes, you can increase the idle to about 1000 rpm, but I would recommend a tune up as it sounds like you may need one.
Rough idle can be caused by many different things - you need to always start with a basic tune up; spark plugs, fuel filter and air filter, as the vehicle will not perform well if any of these three are bad. Then check all vacuum lines for cracks or breaks and replace as needed. You can also add a fuel injector cleaner into the gas tank. I recommend the black bottle of STP concentrated fuel injector cleaner, and you can purchase that at most Wal-Mart's. Hope this helps. Have a nice Monday :O)
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